Sewing-machine.



J. A. GROEBLI.

SEWING MACHINE.

APPLICATION TILED JULY 11, 1911 1,066,490. Patented July 8,1913.

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J. A. GROEBLI.

SEWING MACHINE.

APPLICATION FILED JULY 11, 1011.

Patented July 8,1913.

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cOLuMuIA PMNDGRAP! J. A. GROEBLI.

snwnw MACHINE.

APPLICATION I'ILED JULY 11 1911.

1,066,490, Patented July 8, 1913.

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JOSEPH A. GROEBLI, OF NEW YORK, N. Y.

SEWING-MACHINE.

Specification of Letters Patent.

Application filed July 11, 1911.

atented July 8, 1913. Serial No. 638,013.

To all whom it may concern:

lie it known that I, Josnrli A. Gnonnm, a citizen of the United States,and a restdent of the city, county, and State of New York, have inventedcertain new and useful Improvements in Sewing-Machines, of which thefollowing is a specification.

My invention relates to sewing machines and more particularly to asewing machine for attaching decorations to fabrics.

In my application for U. S. Patent Serial No. (318,681 I have shown adecorated fabric, in which an attenuated decoration, such as a cord orthe like, is attached to a base fabric by means of a line of stitchingpassing through the fabric, and a binding thread which passes under thestitches and around the decoration, to hold the decoration upon thefabric in a desirable and pleasing man ner.

My present invention though adapted for other uses, is particularlyadvantageous for decorating fabric in accordance with the showing in mysaid pending application, and in a simple and inexpensive manner.

In applying decorative material to a fabric it is not always possible,as in the case of strings of beads, to pass a sewing thread through thedecoration and fabric; while in certain other cases it prevents theobtaining of the desired artistic effect, to pass the stitching throughthe decorative material. To avoid this, machines have been made, whichpassed a line of stitching through the base fabric and at the same timewound a holding thread spirally around the decoration and under thestitching, so that the holding thread secured the decm-at-ion and thestitching secured the holding thread to the fabric, so that thestitching was concealed by the decoration. So far it has only beenpossible. to wind the holding thread spirally around the decoration andunder the stitching. The ditliculty with that construct-km of thematerial however, is that the decorative material is not substantiallyheld by the holding thread and the fabric is therefore limited in theuses to which it can be put; and again, the fabric when thus decoratedhas not the same pleasing appearance as when made by hand,in whichlatter case transverse loops of thread pass around the decoration andthrough the fabric. I have therefore devised a machine which willdispose the holding thread in the most desirable and advantageous mannerso that a superior product may be produced upon a machine. A productlike that shown in my said application may be fornled. Under thefullembodiment of my invention the holding thread is passed in zig-zagformation back and forth under the sewing thread and between the latterand the fabric and at preferably regular intervals the holding thread ispassed around the decorative material to form transverse loops forholding the decoratii'm upon the fabric. I accomplish this in a verysimple and etlective manner and in a manner which permits the directionof the feeding the work to be controlled by hand, in order that thedecoration may be applied to the fabric in straight or curved formation,as may be desired. I provide. means for feeding the holding thread inrelation to the stitching and the decoration, and by a novel cammovement unpart an oscillating movement to the holding thread feed topass the holdin thread back and forth under the stitching and thenentirely around the decoration to form a transverse loop.

In the drawings forn'ling a part of this application, Figure 1, is anelevation of a sewing machine of well known construction with part ofthe frame open showing my invention, in the preferred form embodiedtherein, Fig. 2, is a similar view of the rear thereof, Fig. 3, is aplan view of a portion thereof. Fig. l, is a sectional view taken on theline 4t-l of Fig. 3, looking in the direction of the arrows. Fig. 5, isan inverted plan view of the under side of the table, showing parts ofthe hand control for controlling the direction of feed. Fig. 6 is anenlarged elcvatlon showing the needle shaft, needle, and theconstruction of the stitch.

In the pre'lorrml form of my invention I mount a thread holder for theholding thread, to oscillate and rotate around the needle shaft; and ln'oduce the desired movements by means of a cam of peculiar formationwhich actuates a toothed member (gear) and the cam serves to oscillatethe toothed member the desired number of times and to produce themovement whereby the thread fced is entirely revolved, by engagingsuccessive projections upon the toothed member in prcrlctcrmincd order.

In the present case I have omitted showing some parts of the sewingmachine which are of well known construction in order to savecomplications, but it may be here stated that my invention may beapplied to any form of machine which is adapted to stitch a fabric.

In the drawings I have shown a frame 1, of well known constructionhaving a head 2. The usual shaft 3, for operating the needle shaft isshown disposed longitudinally in the head and one end of this shaft isprovided with a drive pulley 4, to which the operating force is carriedby a belt 5. This shaft is shown broken off at the left end and themeans for operating the needle shaft is omitted in order to simplify thepresent showing and because such elements are well known in the art. Ihave shown the needle shaft 6, arranged to reciprocate in the head 2,and it carries on its lower end a needle 7, as well as a guide 6 for thedecorative cord 6 On the shaft 6, I have arranged a sleeve 8, whichpreferably carries the supply of holding thread and a guide for feedingthe same in proper relation to the stitching and decorative material,and by imparting the necessary oscillations and rotations to this, thedesired feed of the holding thread is accomplished. The sleeve 8 isprovided with a lateral plate 9, and between this latter and a plate 10,is. arranged a spindle 11, for receiving and holding the spool 12, ofholding thread so that the latter is moved with the sleeve. The plate 10is adjustable, for the purpose of placing the desired tension upon theholding thread by increasing or decreasing the friction of the plates 9,10, upon the ends of the spool 12. A spindle 13, is provided on theplate 9, which retains a spring 14, and the latter surrounds the spindleand lies between a yoke 15, on the plate 10, and an adjusting nut 16,threaded upon the spindle 13. By means of the nut 16, the plate 10, maybe moved to and from the plate 9, and the desired spring tension placedupon the spool 12. I provide on the plate 9, a downwardly extending Ushaped guide 17, which serves to guide the thread 18, which leads fromthe spool 12, to the working point of the fabric.

I impart to the sleeve 8, oscillating movements, whereby the thread 18,will be led first to one side of the line of stitching formed upon thefabric by the regular sewing needle 7, passing at the same time underthe stitching, and then to the opposite side, at the same time passingthe thread 18, under the stitching. At certain intervals the threadguide ll, and the sleeve 8, rotate completely around the needle shaftand this causes the holding thread 18, to be passed around thedecorative material and the stitching, to form loops for the purpose ofsecuring the decoration to the fabric.

The decorative material, whether it be a cord, made of many smallthreads, or a piping, or a string of beads, is preferably fed throughthe tubular needle shaft 6, from whence it leaves at a point slightlybehind the needle 7, in a manner well known in the art. By feeding thedecorative material upon the fabric slightly behind the needle, that is,behind it in Fig. 1, the sewing thread will not be passed through thedecoration, but will form stitches which will come under the same.

Upon the main shaft 3, of the machine I have provided a gear 21, whichmeshes with, and drives a gear 22, on a short shaft- 23, journaled in alateral hub 24, of the upright standard 25. On the other end of theshaft 23, I have provided a smaller gear 26, which meshes with anddrives a larger gear 27, by which the operating force is carried to ashaft 28. Mounted on the shaft 28, and'preferably against the gear 27,is a cam 29, of peculiar construction, which will be hereinafterdescribed more in detail. The flange of this cam engages with the teethof a gear 30, whosehub 31, is mounted upon a shaft 32, journaled in theframe of' the machine. Upon the hub 31, of the gear 30, is providedanother gear 33. The latter in turn meshes with, and drives a smallergear 34, carried upon a shaft 35. The gear 36, upon the same hub 37, asthe gear 34, imparts the movement to a smaller gear 38, whose hub 39, ismounted on a transverse shaft 40. Within the casing of the frame, I

have provided gear 41, on the hub 39, just referred to, and this gearmiters with a gear 42, on a sleeve 43, from which the movement iscarried finally to the sleeve 8. While all the gears herein referred tomay not be necessary in every machine, I find it convenient to reducethe movement and carry it to the rear of the machine, where the peculiarcam action is brought in and to then bring the converted movementthrough the frame to the longitudinal sleeve and shaft, multiplying themovement at the-same time through the gears. Upon the sleeve 43, isfixed another gear 44, and this miters with a gear 45, which is carriedloosely upon a shaft 47, and the latter is secured at right angles upona shaft 47, which connects with the hand control of the feed, and whichpasses through the sleeve 43. The gear 45, also miters with a gear 46,secured to shaft 48, thereby forming a planetary-gearing of the gears44, 45, and 46.

From the shaft 48, the mot-ion is transmitted by a gear 49, miteringwith a gear 50, the latter being mounted on a short shaft 51, and on thelatter is a second gear 52, which meshes wit-h an intermediate gear 53,secured by a bolt 54, to the head. The gear 53, also meshes with a gear55, carried upon the sleeve 8, which carries the spool. It will thus beapparent that through the various gears I have taken the operating vtherewith.

noesee power for the sleeve 8 from the main shaft 3, and through meanswhich permits the operation of the sleeve 8 independent of the needleshaft, but in proper synchronism The revolving? motion taken tromtliemain shaft is transformed by the cam 2.), and the gear 30, into thedesired oscillatory and rotative motions required for the operation ofthe sleeve SL The gear 30', is here shown as having the teeth 56, theactive faces 57, of which are preferably convex, as clearly appears inFig; 3. The cam 29, is provided with a flange which engages bet-ween theteeth 56, of the gear 30, and the flange is not continuous but has ends58, 59', separated from each other, transversely of the face of the cam.These ends 58', 59 preferably overlap on a transverse line as shown inFig, 2, so that the gear 30, is at all times subject to the action ofsome" part of the cam. In other words the flange is never entirelydisengaged from the teeth of the gear 30. Regarding the cam 29, from theposition shown I in Fig. 2, it will be observed that the flange is socurved that at the point 60, it is on the right side of the cam, whichis the point of engagement with the gear teeth 56, in the position shownin Fig. 2; at the point (31, the flange runs to the lett side of thecam, the curve 62, from the point (30, to the point 61 being ratherabrupt; from the point (31, the flange curves as shown in dotted lines,along the line 63, to the point (34, where it reaches a' point near themiddle of the cam transversely; and from there the flange curves againto the left at 65, until it terminates at the point 59. From the point(30 the flange curves at titi, toward the middle of the cam againaiultermimites in the end volvcs, toward the reader in Fig. 2, thetollowii'ig actions willresult. In the position shown in this figure,the flange engages between teeth 56, and 56' of the gear 30, at thepoint (it), of the cam. It the cam revolves, colinterclockwise, asviewed from the right hand in this figure, the crn-ve (32, will producea revolving action upon the gear 230, turning thelatter clockwise, asviewed in Fig. 2, until the point 61, of the cam reaches the teeth 56,56. This is the extreme thrust of the ca m, because the points (30, and(31, are separated thetfnll width of the cam. The moven'ient thuspri'iduced upon the gear 30 is innaaj'rted through the gears abovedescribed, and their shafts, and

26, an d finally reaches the spool carrying sleeve 8; and this motion issullicicnt to revolve the latter and carry the spool 12, and threadguide 17 about one and a hall rotations around the needle sha't't. Theresult of this will be to cast a loop entirely around the decorativematerial, and around the sewing thread so that the latter, in formingthe stitches upon the 'labric, secures the holding thread 18, to the:t'abrie. By making the curve (32, of the cam short enough this loop maybe ast quickly, so that the needle will not have proceeded in anotherstitch while the loop is being cast. The loop therefore may be made tolie transversely aroundthe decorative material as shown in my saidpending application and resemble hand work. hen the motion justdescribed took place, the sleeve 8, made about one and a haltrevolutions so that the thread guide 17, has moved to the opposite sideof the line of stitching as before.

The continuation of the rotation of the cam 29, in the same direction,will result in the curved part (3?), oil the llange, operating asbefore, between the teeth 5(, 56, moving the gear 30, collnterchurkwise,or reverse to the movement just described, until the point (54, isreached; which will produce a movement in gear 30, of less extent thanthat caused by the curve, between points (30 and til. This movement willcause the holding thread guide 1.7 to oscillate with the sleeve 8,sufiicicnt to cross the thread 18, under the line of stitching producedby the needle, but will not carry the holding thread around thedecorative material, The guide 17, will therefore lie on the oppositeside of the line of stitching to what it previously did. In continuingits movement the cam 29, will still 'lurther act upon the gear 230.While the curve (15, oi the flange 'l'rom point (it, to the point 59, ispassing between the teeth 56, 56 the gear 30 will again be movedclockwise sullicient to cause the guide 17, to again cross the holdingthread under the path of the stitching and bring it to the oppositeside. \Vhen the end 58, entered between teeth 56, and 5(3, no immediatechange was caused: but as the cam revolves and completes its revolutionthe tooth will have advanced from 58 to 5t), that is in addition to itsoscillations the gear will have advanced and another tooth will haveengaged with 58, which tooth in the course of another revolution ot thecam will be advanced by being shifted to 59. Each time the cam revolves,the end 58, takes in a notch oi. the gear 30, to one side of that fromwhich the end 5!), is leaving, so that the progressing action will takeplace at each revolution. The same action is caused by the cam 29, ateach revolution, but the gear 30, is made to pl-(igress one notch ateach revolution of the cam and thereby makes it possible to form theloop around the decoration always in the same direction.

As stated above, I provide means for controlling the direction of feedby hand so that while imparting the above movements to the holdingthread feed, the operator can independently and simultaneously cause theparts to move for changing the direction of feed, in order that thedeco-ration may be formed in various curves on the fabric. On theunderside of the table 67, T have provided a crank 68, which is revolvedon its shaft 69, by an operating handle 71. The shaft 69, carries a gear70, which miters with a gear 72, on a short horizontal shaft 73,journaled in brackets 74:, on the under side of the table. The other endof shaft 73, has a gear 75, which meshes with a gear 76, integral with asleeve 77. The sleeve 77, surrounds the shaft 78, which is the shaftthat operates the looper, and which is reciprocated to revolve thelcoper, and rotated to correspond with the direction of feed. The shaft78, and the looper and its operation, are all well known and may befound in the well known Bonnaz machine. An example of the Bonnaz machinemay be found in U. S. Patent to Cornely No. 1 181.82. The sleeve 77, isfeathered to the shaft 78, by means of pins 7 9, which travel in slots80, so that the shaft '78, will be revolved by the sleeve 77, but. theshaft may be freely reciprocated longitudinally in relation to thesleeve. On one end of the sleeve 77, is provided another gear 81., whichmeshes with a gear 82, on an upright shaft 83, and the latter has on itsupper end a gear 84:, which miters with a gear 85 on the shaft 47. c Thelatter, it will be remembered, carries the cross shaft 47 which has onegear of the planetary gearing thereon. It should be noted that the endof the shaft 47 engages a pin 47 which is secured to an arm 47, of thesleeve 48. The sleeve 18, and the gear on the end thereof is to turn theneedle shaft, through mechanism not shown, and the gear corresponds withgear 12 of the Cornely Patent No. 202,742.

By turning the crank (58, the movement will be imparted through thegears 70, 72, shaft 73, and gears 75, 76, to the shaft- 78, whichoperates the looper and controls its position. From the sleeve 77,through gears 81, S2, shaft 83, and gears 84, 85, the motion is carriedto the shaft 47. Rotation of the shaft 417, in either direction, willcause the gear 15, on cross shaft 47 to be rotated and will also revolvethe sleeve 18, through the pin 47 and arm 47, which cross shaft moveswith the shaft 4-7. From the gear 45 the motion is carried to the gear49, etc, to the thread guide 17, through the shaft 48, and the gears 49,50, shaft 51, and gears 52, 53, and 55, the same as if the motion camefrom the cam. Since the movements from the cam 29 come to the shaft 48,through the planetary gears 4a, a5, and 46, the movement of the handfeed can take place simultaneously with the oscillations and rotationscaused by the cam, and without interference one with the other. In thismanner the position of the guiding finger 17, is controlled for thepurpose of controlling the direction of feed of the work.

From the above it will be apparent that I provide means for oscillatingthe holding thread back and forth before the stitching simple andpositive and there is no chance of it failing to, perform its functionsproperly.

In describing my invention in detail I do not infer thereby that theinvention is limited to the embodiment of it shown herein, as variouschanges may be made within the scope of the appended claims. I haveadapted. my device for producing a certain number of oscillations, butmy invention is not limited to this precise form,

Having described my invent-ion, what I claim is 1. A sewing machineembodying means for stitching a fabric, means for leading a decorativematerial to the fabric, and means for feeding a holding thread, andautomatic means for imparting oscillatory and rotative movements to thesaid holding thread feeder, and arranged to cause the holding thread tobe passed back and forth between the sewing thread and fabric and alsoto encircle the decorative material.

A sewing machine embodying means for stitching a fabric, means forleading a decorative material to the fabric, means for, feeding aholding thread, and automatic means operated in synchronism with thestitching means and arranged to impart oscillatory movements to theholding thread feeder and arranged to impart successive rotativemovements thereto progressing in the same direction, to cause theholding thread to be passed back and forth. between the stitching andfabric and. to encircle the decorative material and stitching, to formloops over the decorative material, in the same direction.

3. A sewing machine embodying a needle shaft and needle, means forfeeding a deco rative material to the fabric, means for feeding aholding thread and rotatable around the needle shaft and meansautomatically imparting oscillatory and rotative movements to theholding thread feeder and arranged to cause the holding thread to bepassed back and forth between the sewing thread and fabric and toencircle the decorative material.

4;. In a sewing machine embodying means for stitching a. fabric, meansfor feeding a dt-a' orative material to the fabric, means for feeding aholding thread, and means operated automatically by the sewing machineand adapted to impart oscillatory and relative movements to the saidholding thread, whereby the holding thread will be passed back and forthbetween the stitching and fabric and around the decorative material, andu'ianually operated means for simultaneously imparting oscillatory orrotative movements to said holding thread device for the purpose offollowing the direction of feed of the machine.

5. In a sewing machine embodying means for stitching a fabric, and amain shaft for operating the same, means for feeding a decorativematerial to the fabric, means for feeding a holding thread, and means operated from said main shaft and automatically imparting oscillatory androtative movements to the holding thread. device, and arranged to causethe holding thread to be passed back and forth under the stitching andalso encircle the decorative material.

6. In a sewing machine embodying means for stitching a fabric, a needleshaft means rotative around the needle shaft, and pro vided with meansfor holding a spool, means for placing a tension thereon, means forguiding the thread from said spool; and means z'rutomatically impartingoscillatory and rotative movements to the said spool holding device, andadapted to cause the thread from said spool to be passed back and forthunder the stitching thread and also encircle the decorative material.

7. In a sewing machine embodying means for stitching a fabric andfeeding a decor: tive material to the fabric, a main shaft for operatingthe stitching device, means for feeding a holding thread under thestitching and around the decorative material, means operated from themain shaft, and adapted to reduce the speed from the main shaft, meansfor converting said reduced motion into oscillatory movements ofdifferent extents, and means for conveying said last motions to the saidholding thread device, whereby the latter will be caused to oscillateand rotate for the purpose set forth.

8. In a sewing machine eml'iodying means for stitching a fabric andfeeding a decorative material to the fabric, a main shaft for operatingthe stitching device, means for feeding a holding thread under thestitching and around the decorative material,

means operated from the main-shaft and adapted to reduce the speed fromthe main shaft, means for converting said reduced motion into(,iscillatory movements of ditl'er cut extents and so that the greateroscillations progress in the same general direction and means forconveying said motions to the said holding thread device, whereby thelatter will be caused to oscillate and rotate for the purpose set forth.

9. In a sewing machine embodying means for stitching a fabric and:leeding decorative material to the fabric, means for feeding a holdingthread under the stitching and around the decorative material, a cam andmeans cooperating therewith said cam and said mains zultolmlticallycausing oscillations and rotations of said holding thread device, andarranged to cause the holding thread to be passed back and forth underthe stitching and also encircle the decorative material.

10. In a sewingnnu-hine embodyingmeans for stitching a fabric andfeeding decorative material thereto, means for feeding a holding thread,and means for imparting oscillatory and rotative movements to saidlatter means, whereby the holding thread will be passed back and forthunder the stitching and around the decoratimi and embodying a gear and arevoluble cam having a flange engaging the gear teeth and forn'ied withcurves of ditlerent. extent said flange terminating in ends spacedapart, whereby the flange will engage with different teeth of the gearto cause oscillatory and progressive rotative movements in the gear.

11. In a sewing machine embodying means for stitching a fabric and forfeeding decorative material thereto, means for feeding a holding threadand means for imparting oscillatory and rotative movements to said lastmeans, and embodying a gear and a cam cooperating with said gear, andadapted to cause the gear to oscillate and rotatively progress, aplanetary gearing through which the movements of the gear are transmitted to said holding thread device, a manually operated device andmeans for imparting the mo\ 'ements thereof to said holding threaddevice through said planetary gearing, whereby the holding thread devicemay be oscillated independently of, and simultaneous with, the movementscaused by said cam.

Signed at the city, county and State of New York, this 30th day of June,1911..

J OSEll-I A. (IIRO EBLI. lVit-nesses A. II. Kuusnncn'r, IIENRY Eem.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

